[rules-users] Drools Flow : Persistence :- Getting Null Pointer Exception in JPAWorkItemManager.java

[Pardeep.Ruhil at lntinfotech.com]

Hi,
When I try to run a sample test case using drools-persistence.jar it works 
successfully.
But when I try to include the persistence in my OFBiz application, I am 
getting null pointer exception in class JPAWorkItemManager.java.

java.lang.NullPointerException 
 at 
org.drools.persistence.processinstance.JPAWorkItemManager.completeWorkItem(
JPAWorkItemManager.java:85).

Null Pointer is because of getting EntityManager object as NULL. In the 
below line of JPAWorkItemManager.java
  EntityManager em = (EntityManager) this.workingMemory
.getEnvironment().get( EnvironmentName.ENTITY_MANAGER );
the em is null.
Because of this I am getting Null Pointer exception when it try to run the 
code
 if (workItemInfo == null) {
                workItemInfo = em.find(WorkItemInfo.class, id);
        }
 
Can you tell me why I getting NPE when I try to run the jar file in my 
application.
While the code run successfully when I try to run sample test case for 
that.
Please help me to get through the situation.


Thanks & Regards

Pardeep Ruhil
L&T Infotech Ltd
Mumbai
Ph: +919820283884

Larsen & Toubro Infotech Ltd.
www.Lntinfotech.com

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